[Kaspersky Plus update 21.14.5.462 crashes, blocks CHKDSK]

Soon after Kaspersky Plus auto-updated to version 21.14.5.462, my Windows 7 Pro computer blue screened.  I tried to reboot in safe mode and run CHKDSK.  But it said CHKDSK could not run due to recently installed software.  The only way I could run CHKDSK was to completely uninstall Kaspersky Plus.  CHKDSK found and fixed disk errors caused by the crash.

What do I do now?

[Event ID 7006: ScRegSetValueExW access denied]

After installing KIS, my event viewer posts this message on each boot up:

Event ID 7006  -- The ScRegSetValueExW call failed for Start with the following error: 
Access is denied.

Is this caused by KIS self-protection?   Is there a bug somewhere?